saawso high impact weather events ismail gultepe ec, cloud physics and severe weather research...
TRANSCRIPT
SAAWSO HIGH IMPACT WEATHER EVENTS
Ismail GultepeEC, Cloud Physics and Severe Weather Research
SectionToronto, Ontario M3H 5T4, Canada
OBJECTIVES
• EMPHASIZE HIGH IMPACT WEATHER EVENTS
• -SURFACE OBSERVATIONS• -REMOTE SENSING OBSERVATIONS• -FORECAST MODELS• -INTEGRATED DATA
• FOCUS ON SATELLITE BASED ALGORITHMS AND NOWCASTING
HIGH IMPACT WEATHER EVENTS
• LOW VISIBILITY AND CEILING• HEAVY SNOW• FREEZING FOG, DRZ, AND RAIN• HEAVY RAIN AND DRIZZLE• STRONG GUST AND WIND SHEAR• SNOW SQUALLS
ANALYSIS ISSUES
• MEASUREMENT UNCERTAINTY-CALIBRATION -INSTRUMENT RESPONSE -THRESHOLDS
• ANALYSIS UNCERTAINTY
• TIME AND SPACE VARIABILITY
IMPORTANT CASES FOR HIGH IMPACT WEATHER EVENTS
• Jan 10 [heavy snow: >50 cm/day]• Jan 17/18 [heavy snow, riming, splint.]• Jan 22 [heavy snow]• Jan23-26 [snow squalls/blowing snow]• Jan 31 [gust/IP/RN]• Feb 2 [heavy snow]• Feb 4[fog/DRZ]• Feb 20-22 [Icing event]• April 6 [heavy RN]• April 19 [wet snow, IP, rain, drizzle]
WINTER SNOW STORM
• MORE THAN 50 CM SNOW/DAY• 60% (350000 PEOPLE) DID NOT
HAVE ELECTRICITY• 4-7 DAYS NO ELECTRICITY• ALL THE FLIGHTS CANCELLED
DURING STORM
APRIL 19 WET SNOW-DRZ CASE
• 7 RADIOSONDES WERE RELEASED:• [0845;1100;1300;1530;1730;2045 LST]
• WETSNOW-IP-RAIN-DRIZZLE FROM 11AM TO 7 PM